Dear FreeSurfer team,
I have been looking at area.pial differences in two groups using qdec. I
would now like to extract stats for each subject at the gyral level (using the
Desikan parcellation). I used aparcstats2table with the measure flag set to
area. But these numbers seem off. Is
You need to specify 'pial' as the surface name argument in
mris_anatomical_stats
cheers,
-MH
On Thu, 2011-12-15 at 10:52 -0500, Robustelli, Briana (NIH/NIMH) [F]
wrote:
> Dear FreeSurfer team,
> I have been looking at area.pial differences in two groups using qdec.
> I would now like to e
Dear Lilla,
Thank you very much for your answer and your help. I followed all the
recommended steps (I introduced a white matter mask that will ensure that I am
only
considering diffusion values in the white matter and then also I did corrected
for multiple comparison running mri_glmfit-sim w
Dear Doug,
Thanks again for your reply. Based on that I did some further work.
I first demeaned the age of all subjects. Actually, I have a third group
which I would like to compare to, so my contrast matrices will be
[.5 .5 -.5 -.5 0 0 0 0 0 0 0 0]
[0 0 .5 .5 -.5 -.5 0 0 0 0 0 0]
[.5 .5 0 0 -.5
How might we obtain nWBV from the FS data? What variables could be summed
or what variable could be used individually and adjusted to create a nWBV?
Does total gray include cerebellar gray, but total white volume does not
include cerebellar white?
Sincerest thanks!
Lindsay
___
Thanks. I just added it into our code, so new versions will not have
this problem.
doug
Maryam Vaziri Pashkam wrote:
> Hi,
>
> Following up on the preprocessing error:
> > Can't connect? tcp_connect[connect]: Connection timed out
>
> We figured where the problem is. This error came out when frees
total cortical WM should not include the ventricles. If the lateral
ventricles are not segmented properly, then they would be included, but
this would be an error. Otherwise, I think your equation is correct.
doug
Cheryl McCreary wrote:
> Hi Doug,
>
> Thanks for the quick reply. I will re-run t
Hi Doug et al,
We have been working on a linear regression-type analysis (see attached
analysis.info for analysis and slopepar for a sample paradigm file) that
involves task-related activation in a working memory test. For each
participant, there are four conditions: 1, 3, 5, and 7 items that nee
Hi Heather, the ICV is mostly unrelated to the other volumetric
measures. what do you mean that you are having problems getting ICV to
fit correctly in your sample?
doug
Lugar, Heather wrote:
>
> We are having a difficult time getting the ICV to fit correctly in our
> sample, but the segmention
Just for clarification, the standard output value in the aseg.stats for total
cortical WM
is detremined with 'mris_wm_volume' which subtracts out the volume of non-wm
voxels based on the
aseg, correct?
Jim
From: freesurfer-boun...@nmr.mgh.harvard.edu
[f
Yes.
Alexopoulos, Dimitrios wrote:
> Just for clarification, the standard output value in the aseg.stats for total
> cortical WM
> is detremined with 'mris_wm_volume' which subtracts out the volume of non-wm
> voxels based on the
> aseg, correct?
>
> Jim
>
> _
yes
On Thu, 15 Dec 2011, Alexopoulos, Dimitrios wrote:
> Just for clarification, the standard output value in the aseg.stats for total
> cortical WM
> is detremined with 'mris_wm_volume' which subtracts out the volume of non-wm
> voxels based on the
> aseg, correct?
>
> Jim
>
> _
Ok. So then if ventricular volume is already excluded, the brain
parenchymal volume should be:
Total GM + total cortical WM +cerebellar GM + cerebellar WM + brain stem -
CSF?
Cheryl
On 11-12-15 2:58 PM, "Douglas N Greve" wrote:
> Yes.
>
> Alexopoulos, Dimitrios wrote:
>> Just for clarifica
13 matches
Mail list logo
